For a more complete understanding of modernity and avant-garde, you can watch these films while reading important texts on the philosophy of art and media by Kracauer (From Caligari to Hitler, Theory of Film: The Redemption of Physical Reality), Benjamin (The Work of Art in the Age of Mechanical Reproduction, Surrealism: The Last Snapshot of the European Intelligentsia), Adorno (Aesthetic Theory, The Culture Industry), Greenberg (Avant-Garde and Kitsch), Debord (The Society of the Spectacle), Baudrillard (Simulacra and Simulation) and Bürger (Theory of the Avant-Garde).
Directors: Ruttmann, Eisenstein, Vertov, Buñuel, Hitchcock, Deren, Brakhage, Schneemann, Resnais, Godard, Marker